My house is about 60 years old. I have been replacing all of the outlets in my house because they are all old. In my kitchen, there is an outlet near my sink that is not GFCI protected at neither the breaker, nore the outlet. It is a 20amp circuit, and this outlet in question is rated at 15amps. This is an outlet that I have several high wattage small appliances connected to. I havent had any problems so far but I want to replace it with a GFCI. The current outlet is 15amps so should I replace it with a 15amp GFCI or put in a 20amp GFCI? Will it be a problem to replaced it with a 20amp even though the current outlet is 15amp? Also, I will want to plug in a 6 outlet power strip to this outlet as I currently am doing and the strip is rated at 15amps, so is this safe?